I found a good article that helps explains HTTP headers, found it comical, and just might help out anyone trying to learn.
$this->performHighlight(‘GET /book/html/index.html HTTP/1.1
*/*’, ‘dos’, $content);
I want the resource “/book/html/index.html”. Now, bear with me, I’m Internet Explorer and Office is installed so I can accept this resource in a lot of formats, in this order of preference: GIF, JPG, Progressive JPG, Click Once App, Microsoft XPS Document, XAML, XAML Browser App, Flash, Silverlight 2, Silverlight 1, Excel Document, Powerpoint Document, or a Word Document. If you can’t give me “/book/html/index.html” in any of those formats then give me anything you’ve got!